ike-scan binary package in Ubuntu Focal amd64

 ike-scan discovers IKE hosts and can also fingerprint them using the
 retransmission backoff pattern.
 .
 ike-scan does two things:
 .
 a) Discovery: Determine which hosts are running IKE.
    This is done by displaying those hosts which respond to the IKE requests
    sent by ike-scan.
    .
 b) Fingerprinting: Determine which IKE implementation the hosts are using.
    This is done by recording the times of the IKE response packets from the
    target hosts and comparing the observed retransmission backoff pattern
    against known patterns.
    .
    The retransmission backoff fingerprinting concept is discussed in more
    detail in the UDP backoff fingerprinting paper which should be included
    in the ike-scan kit as udp-backoff-fingerprinting-paper.txt.

Source package